|
| |
|
|
A146458
|
|
Number of n X n binary arrays symmetric about the diagonal and under 90 degree rotation with all ones connected only in a 1100-0111-0010 pattern in any orientation.
|
|
0
| |
|
|
1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 3, 3, 11, 11, 31, 31, 113, 113, 699, 699, 5221, 5221, 45431, 45431, 522967
(list; graph; refs; listen; history; internal format)
|
|
|
|
OFFSET
| 1,11
|
|
|
EXAMPLE
| Maximal 11 X 11 example
.0.0.0.1.0.0.0.1.0.0.0
.0.0.1.1.0.0.0.1.1.0.0
.0.1.0.1.1.0.1.1.0.1.0
.1.1.1.0.1.0.1.0.1.1.1
.0.0.1.1.0.0.0.1.1.0.0
.0.0.0.0.0.0.0.0.0.0.0
.0.0.1.1.0.0.0.1.1.0.0
.1.1.1.0.1.0.1.0.1.1.1
.0.1.0.1.1.0.1.1.0.1.0
.0.0.1.1.0.0.0.1.1.0.0
.0.0.0.1.0.0.0.1.0.0.0
|
|
|
CROSSREFS
| Sequence in context: A147159 A146828 A146583 * A122573 A136123 A045495
Adjacent sequences: A146455 A146456 A146457 * A146459 A146460 A146461
|
|
|
KEYWORD
| nonn
|
|
|
AUTHOR
| R. H. Hardin (rhhardin(AT)att.net)
|
| |
|
|
